CN104541051B - The system and method being accurately aligned are provided when installing wind turbine blade - Google Patents
The system and method being accurately aligned are provided when installing wind turbine blade Download PDFInfo
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- CN104541051B CN104541051B CN201380044083.8A CN201380044083A CN104541051B CN 104541051 B CN104541051 B CN 104541051B CN 201380044083 A CN201380044083 A CN 201380044083A CN 104541051 B CN104541051 B CN 104541051B
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- wind turbine
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- bushing
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- 238000009434 installation Methods 0.000 claims abstract description 77
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/70—Bearing or lubricating arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0658—Arrangements for fixing wind-engaging parts to a hub
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of the blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2230/00—Manufacture
- F05B2230/60—Assembly methods
- F05B2230/604—Assembly methods using positioning or alignment devices for aligning or centering, e.g. pins
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/30—Retaining components in desired mutual position
- F05B2260/301—Retaining bolts or nuts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
- Y10T29/4932—Turbomachine making
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
Describe a kind of installation wind turbine blade（10）System and method, it is designed to the guiding and alignment that contribute to wind turbine blade root and hub portion sidepiece part such as blade pitch system.In addition, the system is operable to reduce root of blade ovalization effect.Provide at least one circular ring（79,80）, it can be rested against from wind turbine blade（10）Butt（16）Prominent installation elements（For example, root of blade bushing（74））At least a portion.The collar（79,80）Root of blade is pushed for absorbing to elliptical shape（16）Power, so as to provide the improved processing of root of blade ovalization and ensure that installation elements for example keep bolt hole（78）With root of blade bushing（74）It is accurate radially aligned.The possibility that the bolt failure caused by part misalignment is reduced to Barebone of this improvement.
Description
Technical field
The present invention relates to a kind of system of installation for wind turbine blade wind turbine hub portion and related side
Method, the butt improved with offer are aligned and improve the processing of root of blade ovalization.
Background technology
Wind turbine has become a kind of preferable regenerative resource in developed country, so as to promote people to carry
The output of high turbine and efficiency and pay lasting effort.This is had resulted in physically larger wind turbine layouts
Development and production.
Due to the lasting increase of part dimension, wind turbine chance now is by for previous small size design not structure
Problematic mechanical problem.One in these problems is root of blade ovalization.
Wind turbine blade root generally includes the multiple connecting elements protruded from circular butt, such as root of blade lining
Set, bolt, flange etc. are kept, these connecting elements are used to wind turbine blade being connected to wind turbine hub portion, wind-force
Turbine hub portion's extension and/or inclination（pitch）System.Born when usually using bolt is kept in installation wind turbine
During the very big power being related to during blade, this holding bolt must be connected between wind turbine components with higher precision.
Keep bolt and/or for receive it is this holding bolt hole between any misalignment can result in be arranged on root of blade lining
The side wall for keeping threaded bolt contacts or scraping root bushing, root flange and/or inclination bearing in set.This directly contact meeting pair
Keeping the resistance to vibration of bolt has serious influence, it is necessary to avoids this directly contact to avoid keeping bolted too early
Failure.
In addition, the known problem in wind turbine manufacture is the root of blade ovalization after blade molding, wherein, blade
Present in root segment natural force effect into force nominal circular blade root to ellipse change.This ovalization to pacify
The accurate alignment actions of root of blade part during dress or join operation significantly complicate.
Current building method is directed to use with jack mechanism, and the Duan Dingcheng of wind turbine blade root is rounded,
To contribute to the subsequent installation of the installation of blade root flange and/or blade on turbine.However, this system can not provide
The uniform circularity of butt, this can cause the misalignment between root of blade part.In addition, once jacking force is revoked, blade root
End will effect into recovering to natural ellipse.
The example of the prior art systems for wind turbine blade installation is provided in EP 2 453 129, this shows
Example is using the guide bushing with tapering point come relative to mounting flange guide blades root.
It is an object of the invention to provide a kind of method and system to provide blade root and follow-up wind turbine components
Between improvement be aligned and minimize the influence of wind turbine blade root ovalization, so as to improve wind turbine
The durability of part.
The content of the invention
It thus provides a kind of wind turbine for including the rotor with approximate horizontal armature spindle, the rotor include
Hub portion and at least one wind turbine blade extended in a substantially radial direction from hub portion, the wind turbine blade have top
End and the butt of circular,
Wherein, multiple bushings protrude from the butt of at least one wind turbine blade, for will described in extremely
A few wind turbine blade is attached to hub portion, extension or the inclined ring for being connected in the rotor, wherein the hub portion,
Corresponding multiple holes are defined in the installation surface of extension or inclined ring,
The hole and bushing are arranged to receive multiple bolts so that at least one wind turbine blade is attached into institute
Hub portion, extension or inclined ring are stated,
Wherein described wind turbine includes at least one guiding surface for being adjacent to extension with the hole, the lead schedule
Face effect is into making the bushing be aligned with the hole so that the free end of the bushing and the hole, which are adjacent to, rests on installation table
On face, and
Wherein, the guiding surface is generally normal to the installation surface.
Because guiding surface is generally normal to installation surface, so providing the improved peace for wind turbine blade
Dress system.This results in the plurality of advantages compared to prior art, because it makes it possible to more easily manufacture and processing component
With the surface with cooperation, and provide the more effective biography of the load between bushing and installation surface and guiding surface and supporting force
Pass.
Additionally or alternately, the bushing protrudes first from the butt of at least one wind turbine blade
Highly, and
The guiding surface is provided by least one circular ring, wherein the circular ring protrudes second from installation surface
Highly,
Wherein, first height is more than the described second height so that in the butt and at least one circular set
Space is limited between ring.
Circular ring is disposed adjacently with hub portion, extension or inclined ring.It will be appreciated that circular ring can be with hub
Portion, extension or inclined ring are integrally formed.Because the distance that bushing protrudes from blade root is more than circular ring from hub portion side
The distance that element protrudes, it is therefore prevented that the butt of blade directly contacts with circular ring.
Preferably, wind turbine blade is substantially formed by fibrous composite, and circular ring and hub portion, extension
Part or inclined ring are substantially formed by metal material.
Prevent the direct contact between fibrous composite butt and metal installation elements from reducing because both are different
Abrasion between material and the possibility of butt damage occurred.
Preferably, to be provided with least one elasticity between the butt and the guiding surface of at least one blade close
Sealing or spacer element.This can include applying rubber ring or flexible pipe on circular ring or blade root.
The entrance of moisture is prevented using seal or spacer element, and is also ensured in fibrous composite blade root
End between the metal circular collar or inclined ring with not contacting directly.
In one aspect, a part for guiding surface is chamfered；Preferably, this part is guiding surface away from described
The part of installation surface；It is preferably less than the 50% of the height of guiding surface.
By setting chamfered section in the free end of guiding surface, bushing more easily can be aligned to pacify with hub portion side opening
Dress.It is to be understood, however, that the major part of guiding surface is orthogonally arranged with installation surface.
A kind of following wind turbine is additionally provided, it includes the rotor with approximate horizontal armature spindle, the rotor bag
Hub portion is included, substantially radially direction extends at least one wind turbine blade from hub portion when being installed on hub portion, wind turbine
Machine blade extends along the longitudinal direction parallel to longitudinal axis and the butt with top and circular,
Wherein, multiple connections or installation elements protrude from the butt of at least one wind turbine blade, institute
State butt installation elements and be arranged to the butt of the wind turbine blade being attached to and be arranged in the hub portion or connect
Multiple corresponding hub portion side installation elements in the hub portion, and
Wherein, wind turbine also includes at least one collar between the butt and the hub portion, preferably
For circular ring, wherein at least one collar effect into rest against the multiple installation elements from the butt protrude to
A few part, makes the multiple butt installation elements be aligned with the multiple hub portion side installation elements.
Can be sized to provide of circular ring and is arranged in hub portion or is attached to hub portion at butt installation elements
Corresponding hub portion side installation elements between be closely aligned with so that the misalignment between blade installation elements and hub portion installation elements
Risk minimization.Circular ring can also contribute to guide the butt installation surface with hub portion side installation elements to join
Connect.In addition, mean to prevent installation elements using the adjacent circular ring of the installation elements with protruding from the blade root
Imaginary ring together with associated blade root exceedingly ovalization.
Butt installation elements can include any suitable array of the element protruded from the butt of wind turbine blade,
These elements are used for installing or being attached to larger wind turbine structure wind turbine blade, such as：Flange member, dash forward
Go out the jag of bolt, prominent blade sleeve and/or the root of blade bushing being embedded in wind turbine blade butt.Set
In hub portion or it is connected in the corresponding hub portion side installation elements in hub portion will be understood to comprise can be with butt installation elements
Any suitable connection of connection, for example, hole or drilling for receiving bolt.It will be appreciated that wind turbine blade
Length is preferably more than at least 30 meters.
In particularly preferred embodiments, the butt installation elements are included with imaginary bolt circle（bolt
circle）The multiple root of blade bushings set around the butt, and hub portion side installation elements include being limited to setting
The multiple bolts hole for being placed in the hub portion or being attached in the hub portion side body in the hub portion,
Wherein, the root of blade bushing is arranged to receive multiple bolts, and the multiple bolt extends through the bolt
Hole by the butt to be fastened to hub portion side body, wherein at least one circular ring is arranged to make the multiple leaf
Piece root bushing is aligned with the multiple bolt hole to prevent bolt misalignment.
By resting against the root bushing of root of blade, circular ring is able to maintain that the radially aligned and blade kept on bolt
The shape of root, so as to prevent the sidepiece of bolt and root bushing, blade root flange and/or hub portion side body（Such as tilt
Ring tilts bearing）Undesirable contact.This plays bolt failure during the expectation working life for reducing wind turbine blade
Possibility effect.
In one embodiment, the first each openend in the multiple bolt hole is limited to hub portion side sheet
On the surface towards root of blade of body, wherein at least one circular ring is adjacent with the surface towards root of blade
Ground is set, and at least one circular ring has towards the supporting surface of bushing to rest against in the root of blade bushing extremely
It is few multiple,
Wherein, the diameter of at least one circular ring is chosen to the supporting surface towards bushing and institute
The wall wide that the distance between described first openend of multiple bolts hole is stated equal to root of blade bushing adds tolerance value so that institute
State multiple bolts hole and multiple root of blade bushing rough alignments.
Because in the manufacturing tolerance and/or non-homology of the wind turbine of the different designs for being produced by different manufacturers
Difference is there may be in terms of system requirement, it is preferred that at least one circular ring is dimensioned to consider this public affairs
Difference, the possibility of system operatio may be influenceed to reduce manufacturing variation.Preferably, the center line of bolt hole and root of blade bushing
Center line alignment.
It will be appreciated that tolerance value can be based on to the selection of at least one in the following：Bolt flexibility tolerance value；
Stud diameter tolerance value；Bushing side wall dimensional tolerance value；Bolt hole dimensional tolerance value, etc..Preferably, the diameter of bolt is public
Difference is about the 0.05%-0.1% of the diameter of bolt.Preferably, the bushing side wall dimensional tolerance value is bushing sidewall width
About 0.05%-0.1%.Preferably, the bolt hole dimensional tolerance value is the about 0.05%-0.1% of the diameter of the bolt hole.
It will be appreciated that hub portion side body can include being suitable to wind turbine blade being attached to wind turbine
Any element of the hub portion such as hub portion extension, pitch system, the connecting flange integral with hub portion.
Preferably, at least one circular ring is by relatively rigid high-strength material such as hardware（Such as steel）
It is made.
Preferably, the diameter of at least one circular ring is substantially near the multiple by being protruded from the butt
The imaginary diameter of a circle that installation elements limit.
The diameter of circular ring is preferably selected to the imagination for allowing circular ring and being limited by prominent installation elements
Tight fit between circle.Because the diameter of circular ring closely follows initial butt diameter of a circle, this prevent imagination
Round shape and the shape of associated blade root exceedingly deviate initial preferable shape due to root of blade ovalization.
In one embodiment, the diameter of at least one circular ring is in the multiple peace by being protruded from butt
In fill the imaginary diameter of a circle that element limits about 5%, preferably in 2%, more preferably in 1%.
This be closely aligned with of corresponding circular diameter prevents the generation excessive ovalization of root of blade, and helps to make leaf
Piece installation elements are accurately aligned with appropriate hub portion side installation elements.
Preferably, the wind turbine includes pitch system, and the pitch system, which has, is arranged in the wind turbine
The first inclined ring between blade and the hub portion, wherein the multiple installation elements are connected in first inclined ring, it is described
Pitch system is operable to make the wind turbine blade relative to the hub pitch,
Wherein, at least one circular ring is arranged on first inclined ring.
Circular ring is carried as can be in the feelings that largely need not be redesigned or reconfigure using pitch system
The system being relatively easily incorporated under condition in existing wind turbine layouts provides the foundation.Further, since blade lean
System generally comprises relatively large structure（Such as the becket of the diameter with least 1 meter）, so this system can
It is sufficiently solid to bear the power that is related in blade ovalization and bending.
Preferably, the installation elements are for example coupled directly to first inclined ring by bolt.
In one aspect, first inclined ring can be included in it is extending between the opposite side of first inclined ring plus
Strong element（Such as pillar or support）To prevent the deformation of first inclined ring.
The intensity of inclined ring can be increased by using reinforced support or stiffener, to provide power in inclined ring
More preferable distribution.
In one aspect, first inclined ring includes at least one circular ring integral with the body of inclined ring.
Inclined ring can be made into the part of the whole for causing circular ring to form pitch system body.
Alternately, wind turbine includes at least one circular ring for being matched with first inclined ring.
The collar can be reequiped for example to existing pitch system using bolt, binding agent and/or snap-fit connection.Additionally or
Alternately, the collar can use the connection of simple press-fit to be connected in inclined ring, and the size of the wherein protuberance of the collar is set
It is set to the inner circumferential for corresponding essentially to inclined ring and/or periphery, protuberance coordinates in the periphery of first inclined ring and/or interior
At least one of surrounding in week.
In one embodiment, wind turbine includes being located at by the described more of the blade root protrusion from circular
The inner circular collar of the inner side of the periphery for the imaginary circle that individual installation elements limit, the inner circular collar are described for resting against
At least a portion of multiple installation elements is to keep the circular shape of the butt and prevent the ovalization of the butt.
10008 additionally or alternatively, wind turbine includes being located at by the described more of the blade root protrusion from circular
The outer circular collar in the outside of the periphery for the imaginary circle that individual installation elements limit, the outer circular collar are described for resting against
At least a portion of multiple installation elements is to keep the circular shape of the butt and prevent the ovalization of the butt.
Preferably, wind turbine includes both inner collar and external collar, and the collar limits between the two logical
Road with receive from the blade root protrude the multiple installation elements at least a portion.
Can be in the guiding and alignment of installation elements using a pair of collars on the both sides of the imaginary circle of installation elements
Period provides increased easness to couple with wind turbine hub portion.
Preferably, at least one circular ring includes being arranged to rest against at least a portion of the multiple installation elements
Supporting surface, wherein the supporting surface is by chamfering at least in part.
Chamfer surface is set to contribute to insertion of the installation elements relative to the collar.
Preferably, at least one circular ring includes rest against the multiple butt installation elements described at least one
The supporting surface divided,
Wherein, at least one circular ring on the hub portion is arranged at or is connected in the hub portion side in the hub portion
Being set on body, supporting surface has the width protruded from the surface towards blade root of hub portion side body,
Wherein, the length that the multiple butt installation elements protrude from the butt is more than the width of the supporting surface,
Wherein, the free end of the multiple butt installation elements rests against the surface of hub portion side body, so that
Space is defined between the butt and at least one circular ring.
Because wind turbine blade is generally formed by fiber-base composite materials, thus composite with it is hard（For example,
Metal）Direct contact between the collar may cause being damaged or worn out for the end of wind turbine blade, such as blade
The fine fisssure of laminated material.The size of the collar is suitably set to will ensure that suitable accordingly, with respect to the prominent length of butt installation elements
When surface between do not occur directly to contact.
In one aspect, installation elements can include the root that about 10-15mm is protruded from the butt of wind turbine blade
Portion's bushing.Circular ring can have 5mm to the supporting surface width between 10mm.Circular ring can also include having about
The chamfered edge of 3mm depth.
Preferably, wind turbine includes the butt for being arranged on the wind turbine blade and at least one circle
At least one potted component between the collar.Preferably, at least one potted component forms the wind turbine blade
The butt and at least one circular ring between seal at least a portion.
Preferably, at least one potted component is arranged to loop member, such as O-ring, wherein described at least one close
The seal that envelope element is formed between the butt of the wind turbine blade and at least one circular ring.
Moisture etc. is prevented to enter inside wind turbine using potted component as the seal between blade and the collar.
Preferably, at least one potted component is formed by elastomeric material such as rubber or plastic material.
In one embodiment, wind turbine blade is formed by fiber-based material, and at least one circle
The collar is formed by hardware, preferably by steel, and wherein methods described also includes providing at least one spacer element or guarantor
The step of protection element, at least one spacer element or protection element are preferably formed by flexible or elastomeric material, positioned at institute
State between the butt of wind turbine blade and at least one circular ring, to prevent the wind turbine blade and institute
State the contact between at least one circular ring.
Provided using special spacer element or protection element and do not contacted directly between blade root and circular ring
Increased certainty.It will be appreciated that spacer element can be formed by any suitable elastomeric material, it is operable to prevent
Only directly contacting between blade root and the hub portion sidepiece part of wind turbine structure.
Alternately, multiple spacer elements are provided between the butt and at least one circular ring.
In one embodiment, the multiple spacer element is arranged around the corresponding installation protruded from the butt
The O-ring that element is set.
It will be appreciated that 10008 additionally or alternatively, installation elements are connected in the hub portion extension being arranged in the hub portion
Part, wherein at least one circular ring is arranged on hub portion extension or be connected in hub portion extension.
A kind of method for preventing wind turbine blade butt ovalization is additionally provided, the wind turbine blade includes big
Circular butt is caused, there is butt the multiple connections protruded from butt or installation elements, this method to comprise the following steps：
At least one collar is provided, it is therefore preferable to circular ring, to rest against the multiple installation protruded from the butt
At least a portion of element, so as to keep the circular shape of the butt and prevent the ovalization of the butt.
Installation elements can include any suitable array of the element protruded from the butt of wind turbine blade, these
Wind turbine blade is being installed or is being attached in the action of larger wind turbine structure and uses by element, these configuration examples
Such as it is：Flange member, prominent bolt, prominent blade sleeve and/or the root of blade being embedded in wind turbine blade butt
The jag of bushing.
Especially, there is provided a kind of method that wind turbine blade is attached to wind turbine hub portion, the wind-force whirlpool
Turbine blade includes butt, and it has the butt of circular, and butt has the multiple butt bushings protruded from butt, wherein should
Method comprises the following steps：
At least one collar is provided, it is therefore preferable to circular ring, to rest against the multiple butt protruded from the butt
At least a portion of bushing, the butt bushing and wind-force whirlpool is arranged on so as to keep the circular shape of the butt and make
Multiple installation elements alignment in turbine hub portion.
Make to further provide the improved system of the ovalization for handling the butt in this way.
Preferably, the offer step is included on the inclined ring of wind turbine blade pitch system described in offer at least
One circular ring.
In one aspect, the step of methods described includes providing wind turbine blade pitch system, the wind turbine
Blade pitch system includes the inclined ring with least one integral circular ring.
Alternately, methods described, which includes at least one circular ring is assemblied in wind turbine blade and tilted, is
The step of inclined ring of system.
Brief description of the drawings
Embodiments of the present invention are described only by example now with reference to accompanying drawing, in the accompanying drawings：
Fig. 1 shows wind turbine；
Fig. 2 shows the schematic diagram of wind turbine blade；
Fig. 3 shows the schematic diagram of the alar part profile of Fig. 2 blade；
Fig. 4 shows of the engagement between the wind turbine blade root of the system according to the present invention and pitch system
The sectional view of the amplification of one embodiment；
Fig. 5 shows the second embodiment of Fig. 4 system；And
Fig. 6 shows the 3rd embodiment of Fig. 4 system.
Embodiment
Fig. 1 shows traditional contemporary upwind wind turbine according to so-called " Denmark's configuration ", its have tower portion 4,
Cabin 6 and the rotor with approximate horizontal armature spindle.Rotor includes hub portion 8 and three blades 10 radially extended from hub portion 8,
Each blade has the root of blade 16 closest to hub portion and the blade tip 14 farthest away from hub portion 8.Rotor has what is represented with R
Radius.
Fig. 2 shows the first embodiment for the wind turbine blade 10 that can be used according to the embodiment of the present invention
Schematic diagram.Wind turbine blade 10 have traditional wind turbine blade shape and including：Closest to hub portion
Root area 30；Farthest away from the type face or wing region 34 in hub portion；And the mistake between root area 30 and wing region 34
Cross region 32.Blade 10 includes leading edge 18 and trailing edge 20, and leading edge 18 is when blade is installed on hub portion towards the rotation side of blade 10
To opposite direction of the trailing edge 20 towards leading edge 18.
Wing region 34（Also referred to as type face region）With preferable or near ideal the blade in terms of lift is produced
Shape, and root area 30 has circular or elliptic cross-section because structure considers；For example, this causes blade 10 to hub
Portion be easily installed and it is safer.The diameter of root area 30（Or chord length）It is constant generally along whole root area 30
's.Transitional region 32 has transition profile 32, and transition profile 32 turns to from circular or oval little by little become of root area 30
The alar part profile 50 of wing region 34.The chord length of transitional region 32 typically with away from hub portion distance r increase and substantially linearly
Increase.
Wing region 34 has alar part profile 50, and alar part profile 50 has to be prolonged between the leading edge 18 of blade 10 and trailing edge 20
The string of a musical instrument stretched.The width of the string of a musical instrument reduces as the distance r away from hub portion increases.
It should be noted that the string of a musical instrument of the different piece of blade is not located in public plane generally, because blade
It can reverse and/or bend（That is, pre-bend）, thus the process by accordingly reversing and/or bending provides string plane, this is most normal
Insight is to compensate for situation of the local velocity depending on the radius away from hub portion of blade.
Fig. 3 shows the schematic diagram of the alar part profile 50 of the typical blade for the wind turbine described with various parameters, this
A little parameters are generally used to limit the geometry of alar part.Alar part profile 50 is using with the pressure side 52 and suction side 54
In --- that is, during the rotation of rotor --- on the pressure side 52 and suction side 54 generally respectively for windward（Or against the wind）Side is with
Wind（Or with the wind）Side.Alar part 50 has string 60, and string 60 has the chord length c extended between the leading edge 56 of blade and trailing edge 58.The wing
There is thickness t, thickness t to be defined on the pressure side the distance between 52 and suction side 54 in portion 50.The thickness t of alar part becomes along string 60
Change.Deviation with symmetrical profiles is provided by ogive 62, and ogive 62 is the neutrality line through alar part profile 50.The neutrality line energy
It is enough to be obtained by drawing from leading edge 56 to the inscribed circle of trailing edge 58.The neutrality line follows the center of these inscribed circles, and with
The deviation of string 60 and distance referred to as sagitta f.Also asymmetry can be limited by using the parameter for being referred to as upper sagitta and lower sagitta
Property, upper sagitta and lower arch height is defined as distance away from string 60 respectively and away from suction side 54 and on the pressure side 52 distance.
Alar part profile generally describes its feature with following parameter：Chord length c, maximum sagitta f, maximum sagitta f position
Df, maximum alar part thickness t（It is the maximum gauge along the inscribed circle of arch neutrality line 62）, maximum gauge t position dt, with
And nose radius（It is not shown）.These parameters are defined generally to the ratio with chord length c.
The plastic material that wind turbine blade is generally strengthened by fiber（That is glass fibre and/or carbon fiber）Formed, this
A little plastic materials arrangements are in a mold and with resin solidification to form solid structure.The length of current wind turbine blade
More than 30 meters to 40 meters, there usually can be several meters long of root of blade diameter.
Wind turbine blade 10 is connected to hub portion 8 at the butt 16 of blade 10.Generally, at the butt 16 of blade 10
A series of installation elements are provided with, these installation elements are used to be attached to hub portion 8.Selected installation elements can be directed to not
With wind turbine layouts and change；For example, installation elements can include the holding bolt or cross bolt for being arranged on butt
（cross-bolt）, prominent blade root flange, and/or be embedded in blade root to receive the root of blade bushing of bolt.
Installation elements are generally set with arrangement spaced apart around the periphery of circular blade butt 16, and blade root is direct
It is connected to wind turbine hub portion 8 or is connected to the blade pitch system being arranged in hub portion 8.
Blade pitch system generally includes a pair of concentric inclined rings being linked together by bearing connection, wherein first inclines
Oblique ring can rotate relative to the second inclined ring.By the way that the first inclined ring to be installed on to the butt 16 of wind turbine blade 10 simultaneously
And the second inclined ring is installed on wind turbine hub portion 8, wind turbine blade can tilt relative to turbine hub portion 8,
To control wind turbine operation.
Reference picture 4, show a part for butt 16 for wind turbine blade 10 when being connected to blade pitch system
Amplification sectional view.It will be appreciated that shown section is replicated substantially around the whole periphery of blade root 16.
A part for pitch system is shown, it is one section of form of the first inclined ring 70.It will be appreciated that first inclines
Oblique ring 70 passes through with the second inclined ring（It is not shown）Multiple bearings 72 couple, wherein the second inclined ring is connected to wind turbine
Machine hub portion 8.
In the present embodiment, multiple root of blade bushings 74 are embedded in blade root 16, wherein the freedom of bushing 74
74a is held to be protruded from the surface of butt 16.Bushing 74, which is provided with, receives multiple bolts（It is not shown）Blind hole 76, by blade root
16 are fastened to larger wind turbine structure.It will be understood, however, that any suitable installation can be used in the present invention
Element.
Through hole 78 is provided with the first inclined ring 70, the through hole is from the phase of butt 16 with wind turbine blade 10
The first surface 70a set adjacently extends to the second surface 70b set on the contrary with first surface 70a.
First inclined ring 70 is provided with first collar 79 and second collar 80 on the first surface 70a.First
The collar 80 of the collar 79 and second around the first inclined ring 70 periphery extend, so as to limit it is between the collar 79,80, comprising through hole
The passage or groove 82 of 78 opening.The collar 79,80 is arranged to receive the free end 74a of root of blade bushing 74 in passage 82,
The blind hole 76 of root of blade bushing 74 is aligned with the through hole 78 of the first inclined ring 70, so as to allow root of blade
16 are attached to the first inclined ring 70.
The imaginary circle that being dimensioned so as to closely follow of the collar 79,80 is limited by the array of root of blade bushing 74 it is outer
Week so that any potential deformation of the imaginary circle of blade root 16 and associated bushing 74 or ovalization will all cause root
At least one of free end 74a of bushing 74 rests against first collar 79 and/or second collar 80.Because the collar 79,80 can be with
It is integral with the body of the first inclined ring 70 and preferably formed by relatively solid and non-flexible material such as steel, so court
It can be absorbed to the power of ovalization driving blade butt 16 by relatively rigid inclination ring structure, and maintain root of blade 16
Circular shape.Further, since the collar 79,80 substantially forces the circular shape that root bushing 74 is in the first inclined ring 70
Shape, so the presence of the collar 79,80 also contributes to the alignment of root bushing 74 and the through hole 78 of inclined ring 70, so as to provide more
Easy installation operation.
It will be appreciated that some parts that the ovalization of butt 16 result in circular butt 16 narrow and other parts become
It is long；The single collar 79,80 may be enough the power for bearing butt ovalization effect, and contribute to the guiding in corresponding hole 76,78
And alignment.
Therefore, described embodiment may be embodied as making first collar 79 or second collar 80 be arranged on the first inclination
On ring 70.
Because blade 10 is generally formed and the collar and pitch system are generally formed by rigid metallic material by composite,
So any directly contact between the two may cause the abrasion in root of blade or fault of construction, such as the main knot of blade
Fine fisssure in structure layered product.It is also desirable to keep the free end of root of blade bushing 74 and the first surface of inclined ring 70
Certain contact between 70a, it is therefore preferable to Full connected so that any bolt in hole 76,78 is all without because blade
Relative movement between butt 16 and inclined ring 70 and be subjected to any stress or strain.Therefore, circular ring 79,80 is from the first table
The width that face 70a is protruded is preferably chosen to make it protrude from blade root 16 less than the free end 74a of root of blade bushing 74
Distance.Which ensure that the free end 74a of bushing will contact the surface adjacent with the openend in hole or drilling 78 of inclined ring 70
70a, while provide the space of the restriction between surface 79a, the 80a faced corresponding with circular ring 79,80 of butt 16.
In another embodiment, faced in the surface of blade root 16 and first collar 79 and second collar 80
At least one potted component 84 can be provided with region between surface.Set potted component 84 be in order to prevent moisture or its
His particle（Such as dust）By being limited between butt 16 and relative surface 79a, 80a for facing of circular ring 79,80
Space enter wind turbine structure inside.Potted component 84 is disposed about one in circular ring 79,80
Or the ring of the periphery extension of two.
In another aspect, spacer element can be set between butt 16 and described relative surface 79a, 80a（Do not show
Go out）, the spacer element is preferably the form of the O-ring around each root bushing 74 or is arranged on first collar 79 and the
The form of the cushion of the top of two collar 80.Can aid in using this spacer element prevents blade root 16 and wind turbine
Direct contact between the pitch system of machine.
Herein in another unshowned possible improvement, at least one in first collar 79 and second collar 80 can
With including being tapered or the surface of chamfering towards the passage 82 for including through hole 78, to help root bushing 84 inserting passage
In 82.
At preferable aspect, circular ring 79,80 is arranged so that when considering various tolerances, corresponding bolt hole
76th, 78 it is precisely aligned, to ensure to receive any bolt in the hole 79,80 all without due to the misalignment between hole
It is subjected to stress and strain.It is preferred, therefore, that hole 76,78 is aligned to prevent threaded bolt contacts blade root and pitch system
The surface of joint（This contact can result in bolt failure）.
In one aspect, it is assumed that the center of the bolt of installation is aligned with the center of root bush hole 76, then bolt should
It is aligned with the center in the hole 78 in inclined ring.The diameter difference between hole 78 in the screw thread and inclined ring of bolt followed by both it
Between maximum axial symmetry tolerance.
Assuming that the free end 74a of bushing 74 external diameter is centered on the center line for the bolt installed, then can obtain down
The size in face：
In order to avoid the contact of bolt, the maximum gauge of external collar 79 is：
Blade bolt circular diameter（BCD）+ blade bushing outer diameter+maximum axial symmetry tolerance-X
In order to avoid the contact of bolt, the minimum diameter of inner collar 80 is：
Blade bolt circular diameter（BCD）- blade bushing outer diameter-maximum axial symmetry tolerance+X
It will be appreciated that it is the tolerance value for allowing acceptable manufacturing variation that X, which is selection, for example, X can be based on butt 16
In root bushing 74 be aligned, the wall thickness of root bushing 74, the thickness of the bolt used and rigidity, and/or be arranged on inclined ring
The alignment in hole or drilling 78 on 70.Preferably, X in 0.1mm between 0.9mm.
Reference picture 4, it is preferable that circular ring 79 or 80 is spaced apart a segment distance with the openend in the hole 78 of pitch system,
The distance allow for ensuring maximum certainty of any misalignment in hole 76 and 78 all in acceptable tolerance.
Although it is integral that Fig. 4 embodiment, which shows that the collar 79,80 is arranged to the first inclined ring 70, it will be understood that
, different executive modes of the invention can be used to the improved processing to root of blade ovalization.The He of reference picture 5
Fig. 6, second embodiment of the present invention and the 3rd embodiment are shown, wherein the present invention can be used by limited remodeling
The inclined ring of standard performs.It will be appreciated that also it is directed to for description and reference used in Fig. 4 on Fig. 5 and Fig. 6
Corresponding part and use.
In Figure 5, first collar and second collar are arranged to the first collar annular construction member 86 and the second collar annular construction member
88 form, the first collar annular construction member 86 and the second collar annular construction member 88 are attached to the first surface of the first inclined ring 70
70a；Preferably, it is threaded io inclined ring using bolt 90.The arrangement of collar annular construction member 86 and 88 is shaped as shown in Figure 4
Passage or groove 82, for receiving the free end 74a of root of blade bushing 74.
In figure 6, first collar and second collar are arranged to the form of first set annulus 92 and second set of annulus 94, wherein
Connected with 92,94 press-fit being dimensioned so as at the first surface 70a by inclined ring 70 to be connected in the first inclination
Ring 70.Therefore, cover annulus 92 and 94 and form passage as shown in Figure 4 or groove 82 without any machinery connection with inclined ring 70
Connect.
As Fig. 4 embodiment, it will be appreciated that, Fig. 5 and Fig. 6 embodiment can also utilize only a single set
Ring 86,88,92,94 is implemented, and/or can also use at least one potted component 84 and/or spacer element.
In another improvement of the present invention, it will be appreciated that, the first inclined ring 70 can be modified as carrying out inclined ring
Strengthen；For example, can lateral struts or support be set between the opposite side of inclined ring to prevent from deforming.
The invention provides one kind to ensure root of blade bolt circle and hub portion side bolt circle（For example, pitch system bolt circle）
Between be accurately aimed at, be preferably radially aligned system and method.By ensuring the accurate alignment of part, substantially reduce
The possibility of bolt premature failure during wind turbine service life.By using the invention described above, the rigidity quilt of inclined ring
Effectively it is used for ensuring the circularity of root of blade.Therefore, this system need not be come using relatively heavily loaded blade root flange
Keep the circle of root of blade.The invention provides being substantially reduced for root of blade ovalization effect, so that due to this ellipse
The probability that wind turbine components fail caused by sphering is smaller.
The invention is not restricted to the embodiment of described in the text, but can carry out without departing from the scope of the invention
Remodeling or modification.
Claims (13)
1. a kind of wind turbine, including the rotor with approximate horizontal armature spindle, the rotor includes hub portion and from described
At least one wind turbine blade that hub portion extends in a substantially radial direction, the wind turbine blade have top and big
Circular butt is caused,
Wherein, multiple bushings protrude from the butt of at least one wind turbine blade, at least one by described in
Individual wind turbine blade is attached to hub portion, extension or the inclined ring for being connected in the rotor, wherein in the hub portion, described
Corresponding multiple holes are defined in the installation surface of extension or the inclined ring,
The hole and the bushing are arranged to receive multiple bolts so that at least one wind turbine blade is attached into institute
Hub portion, the extension or the inclined ring are stated,
Wherein described wind turbine includes at least one guiding surface for being adjacent to extension with the hole, and the guiding surface is made
With into making the bushing be aligned with the hole so that the free end of the bushing is adjacent to the hole rests on the installation table
On face, and
Wherein, the guiding surface is generally normal to the installation surface.
2. wind turbine according to claim 1, wherein, the bushing is from least one wind turbine blade
Butt protrude first height, and
The guiding surface is provided by least one circular ring, wherein the circular ring protrudes second from the installation surface
Highly,
Wherein, first height is more than the described second height so that the butt and at least one circular ring it
Between limit space.
3. wind turbine according to claim 1 or 2, wherein, in the root of at least one wind turbine blade
At least one spacer element is provided between end and the guiding surface.
4. wind turbine according to claim 3, wherein, the spacer element is elastic sealing element.
5. wind turbine according to claim 2, wherein, at least one spacer element includes applying in the circle
The shape collar or rubber ring or flexible pipe on the butt.
6. wind turbine according to claim 2, wherein, the wind turbine blade is substantially by fibrous composite
Formed, and the circular ring and hub portion, the extension or inclined ring are substantially formed by metal material.
7. wind turbine according to claim 1 or 2, wherein, a part for the guiding surface is chamfered.
8. wind turbine according to claim 7, wherein, the part is the remote peace of the guiding surface
Fill the part on surface.
9. wind turbine according to claim 7, wherein, the part being chamfered of the guiding surface is less than described draw
Lead the 50% of the height on surface.
10. wind turbine according to claim 1 or 2, wherein, the wind turbine includes being located at by from substantially round
The inner circular collar of the inner side of the periphery for the imaginary circle that the multiple bushing that the butt of shape protrudes limits, the inside
Circular ring is used for resting against at least a portion of the multiple bushing to keep the circular shape of the butt and prevent institute
State the ovalization of butt.
11. wind turbine according to claim 1 or 2, wherein, the wind turbine includes being located at by from substantially round
The outer circular collar in the outside of the periphery for the imaginary circle that the multiple bushing that the butt of shape protrudes limits, the outside
Circular ring is used for resting against at least a portion of the multiple bushing to keep the circular shape of the butt and prevent institute
State the ovalization of butt.
12. a kind of method for preventing wind turbine blade butt ovalization, the wind turbine blade is included substantially
Circular butt, the butt have the multiple bushings protruded from the butt, the described method comprises the following steps：
Installation surface is provided, the bushing is arranged to couple with the installation surface；
At least one collar is provided, at least one collar has the multiple lining for resting against and being aligned and protruded from the butt
At least one of guiding surface of set, so as to keep the circular shape of the butt and prevent the ellipse of the butt
Change, wherein the guiding surface is generally normal to the installation surface.
13. according to the method for claim 12, wherein, the collar is circular ring.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP12173100 | 2012-06-22 | ||
| EP12173100.4 | 2012-06-22 | ||
| PCT/EP2013/063101 WO2013190140A2 (en) | 2012-06-22 | 2013-06-24 | A system and method to provide for accurate alignment when mounting a wind turbine blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104541051A CN104541051A (en) | 2015-04-22 |
| CN104541051B true CN104541051B (en) | 2018-01-16 |
Family
ID=48699017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380044083.8A Active CN104541051B (en) | 2012-06-22 | 2013-06-24 | The system and method being accurately aligned are provided when installing wind turbine blade |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US9651028B2 (en) |
| EP (1) | EP2888473B1 (en) |
| CN (1) | CN104541051B (en) |
| DK (1) | DK2888473T3 (en) |
| ES (1) | ES2713496T3 (en) |
| PL (1) | PL2888473T3 (en) |
| TR (1) | TR201902418T4 (en) |
| WO (1) | WO2013190140A2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9970304B2 (en) | 2015-07-22 | 2018-05-15 | General Electric Company | Rotor blade root assembly for a wind turbine |
| US10060411B2 (en) | 2015-07-22 | 2018-08-28 | General Electric Company | Rotor blade root assembly for a wind turbine |
| CN106640558B (en) * | 2016-12-30 | 2019-04-12 | 北京金风科创风电设备有限公司 | Pitch bearing, blade, impeller and connection method for a wind turbine |
| US11015570B2 (en) * | 2017-03-01 | 2021-05-25 | General Electric Company | Wind turbine rotor blade root insert with integrated flange member |
| CN108590950B (en) * | 2018-07-06 | 2023-12-26 | 三一重能股份有限公司 | Wind generating set and wind wheel thereof |
| CN114382669B (en) * | 2022-01-25 | 2023-04-07 | 北京三力新能科技有限公司 | Multifunctional taper sleeve for bearing of wind generating set and mounting method of multifunctional taper sleeve |
| EP4234918A1 (en) * | 2022-02-25 | 2023-08-30 | LM Wind Power A/S | Blade root de-ovalization methods and assemblies |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4236873A (en) * | 1978-09-20 | 1980-12-02 | United Technologies Corporation | Wind turbine blade retention device |
| US4915590A (en) * | 1987-08-24 | 1990-04-10 | Fayette Manufacturing Corporation | Wind turbine blade attachment methods |
| BR9300312A (en) * | 1993-02-02 | 1993-07-27 | Alpina Equipamentos Ind Ltda | IMPROVEMENT IN FIBER REINFORCED PLASTIC PAS |
| US7993103B2 (en) * | 2006-01-05 | 2011-08-09 | General Electric Company | Wind turbine blades and methods of attaching such blades to a hub |
| DE102007008167C5 (en) | 2007-02-14 | 2016-07-07 | Nordex Energy Gmbh | Wind turbine with a rotor hub |
| KR100962147B1 (en) * | 2008-06-12 | 2010-06-14 | 원인호 | Windmill |
| CN102124237A (en) * | 2008-08-13 | 2011-07-13 | 维斯塔斯风力***集团公司 | Wind turbine rotor and method of calibrating rotor blade pitch |
| GB2465167A (en) * | 2008-11-07 | 2010-05-12 | Vestas Wind Sys As | A turbine blade having mounting inserts of different lengths |
| DE102009015073A1 (en) | 2009-03-30 | 2010-10-07 | Würthele, Klaus | Reinforcement structure for reinforcing rotor hub of wind turbine, has circulating reinforcers arranged at outer contour of hub body in area of rotor blade connecting flanges, where reinforcers provide additional support by lateral ribs |
| CN201865835U (en) * | 2009-09-23 | 2011-06-15 | 苏州红枫风电模具有限公司 | Insert for wind turbine blade root and wind blade root |
| JP4563510B1 (en) * | 2010-02-12 | 2010-10-13 | 三菱重工業株式会社 | Wind power generator |
| EP2372149B1 (en) * | 2010-03-29 | 2013-08-28 | Vestas Wind Systems A/S | A wind turbine and a pitch bearing for a wind turbine |
| US20110142618A1 (en) | 2010-10-29 | 2011-06-16 | Bradley Graham Moore | Wind turbine pitch assembly enclosure system |
| EP2453129B8 (en) | 2010-11-11 | 2014-11-19 | ALSTOM Renewable Technologies | Blade for a wind turbine |
-
2013
- 2013-06-24 TR TR2019/02418T patent/TR201902418T4/en unknown
- 2013-06-24 WO PCT/EP2013/063101 patent/WO2013190140A2/en active Application Filing
- 2013-06-24 CN CN201380044083.8A patent/CN104541051B/en active Active
- 2013-06-24 PL PL13731323T patent/PL2888473T3/en unknown
- 2013-06-24 ES ES13731323T patent/ES2713496T3/en active Active
- 2013-06-24 DK DK13731323.5T patent/DK2888473T3/en active
- 2013-06-24 EP EP13731323.5A patent/EP2888473B1/en active Active
- 2013-06-24 US US14/409,236 patent/US9651028B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013190140A2 (en) | 2013-12-27 |
| US20150167641A1 (en) | 2015-06-18 |
| DK2888473T3 (en) | 2019-03-25 |
| US9651028B2 (en) | 2017-05-16 |
| EP2888473B1 (en) | 2018-11-28 |
| TR201902418T4 (en) | 2019-03-21 |
| ES2713496T3 (en) | 2019-05-22 |
| EP2888473A2 (en) | 2015-07-01 |
| CN104541051A (en) | 2015-04-22 |
| PL2888473T3 (en) | 2019-05-31 |
| WO2013190140A3 (en) | 2014-03-20 |
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